Burgh Island, Bigbury-on-Sea, near Kingsbridge

From Openwaterpedia

Created By Kate Rew for Outdoor Swimming Society

From the beach at Bigbury you can swim - given good weather and the right point of the tide - right around Burgh Island.

It will take about an hour and is only possible at slack tide. The sea is cold so you ought to wear a wetsuit on this rather long swim, but you will have the fun of exploring the rocky coastline and watching walkers on the cliffs above.

Reference

Outdoor Swimming Society Open Water Swimming